lisa-ipython: shell support fr-FR language

ifconfig returns
 inet adr:172.17.0.1
instead
 inet addr:172.17.0.1
when language is set to fr-FR

update the sed command to support it

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
(cherry-picked from commit 6e02465f)
[Moved change to right file]
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>